Display panel and display device

Abstract

A display panel, including a main display area and a light-transmitting display area; wherein the main display area surrounds the light-transmitting display area; the display panel includes: a substrate; an organic electroluminescent element array, including a plurality of organic electroluminescent elements disposed on the substrate; the driving circuit array is disposed on the substrate and is adapted to be matched with a high voltage source and a low voltage source for driving each of the organic light-emitting electroluminescent elements; wherein in the light-transmitting display area, the driving circuit array includes a passive driving circuit array; the passive driving circuit array is configured to drive the organic electroluminescent element of the light-transmitting display area to display.

What is claimed is: 
     
       1. A display device, comprising:
 a display panel, comprising a main display area and a light-transmitting display area; 
 an electrical shielding layer disposed under the display panel; 
 a polarizer disposed on a side of the display panel away from the electrical shielding layer; 
 an optical adhesive layer disposed on a side of the polarizer away from the display panel; and 
 a cover glass disposed on a side of the optical adhesive layer away from the polarizer; 
 wherein the display panel comprises:
 a substrate; 
 a driving circuit array disposed on a side of the substrate; 
 an organic electroluminescent element array, comprising a plurality of organic electroluminescent elements disposed on a side of the driving circuit array away from the substrate; 
 wherein the driving circuit array is provided with a passive driving circuit array at a corresponding position of the light-transmitting display area, and the passive driving circuit array is configured to drive the plurality of organic electroluminescent elements corresponding to the light-transmitting display area to display; and 
 wherein the passive driving circuit array comprises a plurality of first data wires disposed along a first direction and a plurality of first scan wires disposed along a second direction, the first direction is not parallel to the second direction, and wherein the plurality of organic electroluminescent elements each are electrically coupled to one of the plurality of first data wires and one of the plurality of first scan wires at intersections of the plurality of first data wires and the plurality of first scan wires, respectively. 
 
 
     
     
       2. The display device according to  claim 1 , wherein in the main display area, the drive circuit array comprises an active driving circuit array. 
     
     
       3. The display device according to  claim 2 , wherein the active driving circuit array comprises a plurality of active drive circuits, the active driving circuits each are connected to the organic electroluminescent element array; the active drive circuits each comprise:
 a second data wire disposed along a first direction, and a second scan wire disposed along a second direction, the first direction is not parallel to the second direction, and a control unit, the control unit is electrically coupled to the second scan wire and the second data wire. 
 
     
     
       4. The display device according to  claim 3 , wherein the control unit comprises:
 a first thin film transistor having a first gate, a first source, and a first drain, the first gate is electrically coupled to the second scan wire, and the first drain is electrically coupled to the second data wire; 
 a second thin film transistor having a second gate, a second source, and a second drain, the second gate is electrically coupled to the first source, and the second drain is electrically coupled to the organic electroluminescent element; and 
 a capacitor electrically coupled between the second gate and the first source. 
 
     
     
       5. The display device according to  claim 1 , wherein the organic electroluminescent element array comprises:
 an anode disposed on the driving circuit array; 
 a hole injection layer disposed on a side of the anode away from the driving circuit array; 
 a hole transport layer disposed on a side of the hole injection layer away from the anode; 
 a light-emitting layer disposed on a side of the hole transport layer away from the hole injection layer; 
 an electron transport layer disposed on a side of the light-emitting layer away from the hole transport layer; and 
 a cathode disposed on a side of the electron transport layer away from the light-emitting layer. 
 
     
     
       6. The display device according to  claim 1 , wherein a pixel density of the main display area is greater than a pixel density of the light-transmitting display area; the pixel density of the main display area is 300-800 PPI, and a pixel density of the light-transmitting display area is 100-300 PPI. 
     
     
       7. The display device according to  claim 1 , wherein the polarizer is provided with a first through-hole corresponding to the light-transmitting display area, the electrical shielding layer is correspondingly provided with a second through-hole corresponding to the light-transmitting display area; and a sensor module is disposed in the second through-hole. 
     
     
       8. The display device according to  claim 7 , wherein the sensor module comprises but is not limited to a fingerprint recognition sensor, a structured light sensor, a time of flight sensor, a distance sensor, and a light sensor.